[Lustre-discuss] problems restoring from MDT backup (test file system)

[Andreas Dilger]

On 2010-03-04, at 05:46, Frederik Ferner wrote:
> Brian J. Murrell wrote:
>> On Thu, 2010-03-04 at 11:21 +0000, Frederik Ferner wrote:
>>> tar tizf test_MDT_Backup.tar.gz
>>> ....
>>> ./ROOT/tmp/frederik/cs04r-sc-com02-04/
>>> ./ROOT/tmp/frederik/cs04r-sc-com02-04/iozone.DUMMY.47
>>> tar: Unexpected EOF in archive
>>> tar: Error is not recoverable: exiting now
>>> </snip>
>>
>> Looks to me like either your tar executable is broken or your  
>> archive is
>> broken.  A typical process of elimination should help you discover  
>> which
>> is the case.
>
> It certainly looks like it's the tar archive that is broken. I get the
> same when I copy it over to a different machine. Unless is the tar
> executable that is broken so that it creates the broken archive as  
> every
> time I create a new archive it seems to be broken at the same place.
>
> Other tar files created on the same machine don't have that problem,  
> but
> I'll try creating a new archive with a new executable.


Make sure you use "--sparse" so that tar isn't mistakenly creating  
huge archives full of zeroes.

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.